Potato and anchovy bake

Method

1. Preheat the oven to 200°C/fan180°C/gas 6. Drain the anchovies, reserving their oil. Gently heat half the butter in a saucepan and stir in the anchovy oil as it melts. Add the onions and fry over a low heat until they are very sweet – don’t let them brown. This should take a good 20 minutes. Once cooked, set aside.
2. Smear a deep, 1.25-litre baking dish with the remaining butter and arrange half of the potatoes in the base. Pour over the onions and arrange 12 anchovies on top. Add the remaining potatoes and half the cream. Season lightly and bake for 30 minutes. Add the remaining cream and bake for another 25 minutes, until golden and the potatoes are very tender. Serve immediately with grilled lamb chops or a good steak.